@notbatman.

Thank you very much for the Sapphire RX480-8GB-Samsung Bios! It boosted my hash up to 30MH easily! Awesome work.
I have another old rig with Sapphire RX470-4GB-Elpida, I tried applying your Elpida memory timing but the best i can hit is 26MH.
Elpida supposed to be the best ram available, that is what I read.

Can you please have a look at the bios I tried using your guide? Running 975C/1850M/800mv settings.
http://s000.tinyupload.com/index.php?file_id=91691182699892199855